Re: [PATCH v13 10/13] virt: Introduce steal governor driver

[sashiko-bot@kernel.org]

> Introduce a new driver in virt named steal_governor. This driver
> will compute the steal time and drive the policy decisions regarding the
> preferred CPU state.
> 
> Note that this driver is strictly intended for actual guests. Hence
> block it on Xen dom0.
> More details can be found in Documentation/driver-api/steal-governor.rst.
> 
> A new kconfig called STEAL_GOVERNOR is introduced in subsequent patches,
> which enables this driver. This driver will select CONFIG_PREFERRED_CPU.
> This makes configs driven by user preference/configuration.
> When the driver is disabled, preferred CPUs remain the same as active CPUs.
> 
> The file layout of the driver is kept simple for now. The code is in
> drivers/virt/steal_governor.c, and the configs are part of
> drivers/virt/Kconfig.
> 
> The main structure of the steal governor contains:
> - work, delay: Deferred periodic work function variables.
> - steal, time: Used to calculate deltas during periodic work.
> - interval_ms, high_threshold, low_threshold: Tuning knobs for the
>   steal governor.
> 
> While there, add MAINTAINERS entry for this new driver.
> 
> Suggested-by: Yury Norov <yury.norov@gmail.com>
> Suggested-by: K Prateek Nayak <kprateek.nayak@amd.com>
> Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>

Sashiko has reviewed this patch and found no issues. It looks great!

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Sashiko AI review · https://sashiko.dev/#/patchset/20260909135617.871006-1-sshegde@linux.ibm.com?part=10